Motion Control

Closed System Technology Drives the Trend Toward Safer Dispensing of High-Purity Chemicals

In dozens of industries and in millions of applications around the world, dangerous chemicals are transferred from their original shipping containers into smaller jugs or buckets, or applied to other end-use processes. Historically, the predominant dispensing method in many of these applications has been through an open system where the liquid is poured out of the container. In many industries using high-purity chemicals, a popular dispensing method is a semi-closed system that pumps the liquid out of a drum or container. In these systems, a dip-tube draws chemicals from vertically oriented containers using an attachable hand or electric pump. While a step in the right direction, the semi-closed dispensing system requires a dip-tube that needs to be removed and re-inserted each time a new drum is used, exposing the end user to drips, leaks, and fumes during transfer. The primary drawback of all open and semi-closed systems is that they needlessly expose the user, equipment, and the environment to potentially hazardous chemicals and vapors.

Posted in: Articles, Motion Control, Containers, Materials handling, Chemicals, Hazardous materials

Controlling Robotics Precisely With Haptic Technology

Robots are capable of very precise motion, but must be guided with precision in order to fulfill their potential. Consider the task of guiding a robotic surgeon’s arm to suture a wound or insert a catheter. A human surgeon, with all his or her knowledge and experience, is required to practice where to probe, cut, or sew before he or she can develop the necessary skills to make a clean suture with the right degree of tension at the right depth or an incision of the right depth. In contrast, a robotic surgeon’s arm can move more consistently and accurately than that of the best human surgeon.

Posted in: Articles, Motion Control, Calibration, Medical equipment and supplies, Surgical procedures, Robotics

Advances in Magnetic Bearings

In this age of environmental consciousness, OEMs around the world are competing to build better, safer, and greener machines. In striving toward such lofty goals, many industries are rediscovering a fundamental principle — magnetics. Magnetic bearings improve reliability, reduce friction, minimize vibration, and offer advanced health monitoring and diagnostics — all without the disadvantages of lubricants.

Posted in: Articles, Motion Control, Sustainable development, Magnetic materials, Materials properties, Bearings

Reducing Electromagnetic Interference in Motion Systems

EMI (Electromagnetic Interference) comes in different forms, frequencies, and levels. Electronic equipment has different categories for both emissions and susceptibility. Under normal circumstances, elimination is not possible so reduction to acceptable levels is what can be reasonably achieved. Coupling factors, rise time, emissions, and susceptibility are phrases that must be understood with confidence.

Posted in: Articles, Motion Control, Electromagnetic compatibility, Electronic control systems, Electromagnetic compatibility, Electronic control systems, Terminology

Benefits of Magnetostrictive Sensors for Industrial Applications

Modern industrial machines rely on fast, accurate motion control in order to achieve high product quality and productivity, as measurement errors can lead to increased scrap and production downtime. However, these and other costly headaches can be avoided by choosing the proper position-sensing device for your application.

Posted in: Articles, Motion Control, Measurements, Sensors and actuators, Sensors and actuators, Production control, Industrial vehicles and equipment

Roller Pinion Technology Allows High Positional Accuracy for Precision Applications

Increasingly competitive markets make efficient and accurate processes more critical than ever before. To meet the demands of manufacturers, machine builders are constantly searching for new methods to design faster, more precise, and longer-lasting systems that will facilitate increased productivity.

Posted in: Articles, Motion Control, Performance upgrades, Manufacturing equipment and machinery, Productivity, Bearings

All Motors are Stepping Motors

In 1938, General Electric began producing a two-phase synchronous induction motor which, at 60 Hz, ran at 75 RPM. The low speed resulted from using a different number of rotors to stator poles or teeth, which made the motor a good bi-directional control motor. This motor was used by Superior Electric Company of Bristol, CT, to run power driven autotransformers used to dim lights in auditoriums and similar applications. General Electric ceased producing this motor in the mid 1950’s due to slow sales.

Posted in: Articles, Motion Control, Transistors, Transistors, Electric drives, Electric motors

Intelligent Control Increases Motion System ROI

The economic realities of the industrial marketplace are driving machine builders and integrators to get creative and build more intelligence into their machines in order to increase productivity and lower lifecycle cost. This is done by minimizing time to communicate with the motion controller, and by setting up and optimizing the closed-loop controls that squeezes the last few unneeded time cycles from a machine operation. Therefore, by looking at how a motion controller connects, controls, and can optimize a system, the best performance per dollar invested can often be accomplished.

Posted in: Articles, Motion Control, Adaptive control, Adaptive control, Performance upgrades, Industrial vehicles and equipment

Tips On Selecting Custom Gearmotors

A custom gearmotor is one that meets your particular specifications. It has the correct mechanical and electrical interfaces, fits within the envelope available, meets your performance, maintenance, lifetime, and aftermarket criteria, and fits within your budget.

Posted in: Articles, Motion Control, Supplier assessment, Gears, Electric motors

Intelligent Motor Control ICs Simplify System Design

A new category of IC called an intelligent motor controller (IMC) is evolving that simplifies the task of designing high performance motor control drives. IMCs are dedicated, highspeed ICs that control multi-phase motors such as brushless DC and AC induction motors, and provide sophisticated control features required by today’s energy-efficient applications such as variable speed, flux vector control, and even sensorless control.

Posted in: Articles, Motion Control, Adaptive control, Electronic control units, Adaptive control, Electronic control units, Electric motors

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